Cut out these various codes and utilize them with students so they practice replicating DNA.
Hand them a code and a colored sentence strip (or manila sentence strip with a colored marker).
Have students code one side using the given information; then have them match it to a complementary strand (A=T, C=/G). Have them include the hydrogen bonds and primes.
Once they complete this first step, have them divide the sentence strip (and the codes right down the middle) with a pair of scissors.
Then hand them an alternative colored sentence strip and have them cut it in two, then embed it into the original DNA, and let them replicate it (code it once again).
In the end they should have four colored DNA strands (2 original color, 2 new color) and should have a clear understanding of DNA Replication.